Calculating-machine.



w. n', BONHAM. QALGULATING HAGHNE. APPLICATION PILEDAPR. 6,1905.

908,731 Patented Jan 5, 1909.

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WALTER RICHARD RoNnAM, or'onicieo, immerse, A

cnomfa'riirauacm's. Y

, To all whom (it may concern.'

Be it known that I, WALTER RionARD BONHAM, a citizen of the United States, re-

siding at Chicago, county of Cook, and State of Illinois, have invented certain new-and useful Improvements in Calculating.-A Machines, of which the following is a full, clear,

and exactfspecication.

This invention relatesv to improvements` in calculating machines, in which is employed a lgirality of dis interposed between the indicatordisks i for transmitting theL motion o'one of the l carrier or Camiers and its prima. simple an eiicient means for ilp reventin Vthe ybeyon the position to whichV it is positively moved one of the indicator members. 2

indicator disks to the other, and the resent improvements have more special re erence.

to means forcontrflinglthe rotation of the t object to provide an improved,

carrier from moving accident b Witha view to thev attainment of these v ends and the accom lishmentV of' certain other objects which the invention onsistsin the features of 301'a1ms.... j, In the said drawingsjFipe 1 is a -plan i view ofmy improved mac 'of the top plate broken away. Fig. 2 isa a part of t e back plate.

vone of the carriers and withL novelty which will now be described .and

reference tov the accompanying dra .then- Vmore particularly pointed' out .in the part cross section thereof onthe line, 2, 2 Fig. 1. Fig. 3 is a" similar sectiono n the line 3, 3, Fig. 1. Fi .'4 is a detail perspective view of larged detail perspective -view of the edge of Fig.".6 is an enlarged detail section taken on theline 6, 6, Ifig. V1.

g 1, 2, 3,.' represent respectivel the indicator.

members or disks which-stan`- for theunit''I .e tens-and hundreds,and it will be understoo of` course'that any desired number ofv thesev vindicator' members*I or disks may be 7employed, the three shown in the-drawingbeing' Y these indicator members are or 1 50 thefback plate, @bb

illustration. mer-b duplicates' of one 'another the descriptionof one suffice 'foi'. all.; 'They are pivoted to .in ns. .of.journals 5,

suiiicientf'for the purposes of l Y: are'v prefers ed on the ldisks themselveszin the ,sh Bosses' stru uptherefrom' and eng; itable; apertures thefback .ipl ate 1 y are provide s fseriesjzjf l through which Specication of Letters Patent. appresa madam-i1 e,- ieos. sei-ai so. 254,030.4

indicator diskfs, and carrierV e invention has for hereinafter appear,-

d f positivel. lock the c '.rfqneed Jan. 5, isos.

the outer circle of back plate, 4,. are aperture, 7', through both the inner' an outer circle of numerals on the back late may be seen in pairs successively as t e indicatordisk is rotated, the two circles of numerals on the back plate being. arranged reversely of each other, or in other words, reading respectively counterclockwise and clockwise. These 3, are thus situated onthe back plate, 4, atv proper distance apart and arranged between 'of these but -it t. the

edV on suitable ivots, 9, one onl disks, 8, bein s ownin the dra will `neverthe ess `be understod t disk 8 to the members 1, 2.

at suita le intervals apart for interme the indicatorfdisks 1, '2,v 3. In the drawing the teeth l11 are omitted from-the disk 1 be' cause they would haveno functionY on the units diskbut. in practicethe disks may be suc "teeth, 11, on the units disk: would not l interfere with the operation of the device.

Each of the indicator'disks, 1, 2, 3, however,

provided with a pg'oject' 12, 4which extends wouldplace the tens disk, 2, in a false post. tion, and in order. to iguardagainst-this and rriei" Y after it has-been disks-1, 2,l

[with teeth 11 formed on the peripheries. o

[duplicates of each otherand the presence of' r excepting the last one of the series, is essenwith tenof.

theteeth or lugs, 10, and consequently im# is seen that for each a tenth of a rotation, andgso". on throughoutA numerals indicated on the visible, 'and 'an elongated which the numbers of them are the carrier disks, 8, which are pivotother one pivoted on the pivot 9 bears the y 'y same relation to the disks v2, 3, as does the- 1 f Y 75 l The'edge of the disk or ca "er8is` provided with depending teeth-or lugs., 10, arranged lug `or the-indicator Vaisles inail@ seria, b L'virtue g ioo' l disk, 2, likewise receive.' 'v

- obvious that should the carrier, 8,- continue to :rotate afterI thetooth 12 leaves it, itv

r tooth 12, I provide a stop therefor in the plate 14. "lhe ends of the teeth, 10, are in close propinquity to the inner face of the back plate, 4, and when in that position the disk 8 is a little to one side of the plane in which the end of the lug or stop 13 is situated so that while in that position thediskS will be free to rotate. As shown in Flg. 2, however, the disk 8 is allowed a slight lateral movement on its pivot, 9, and consequently may be moved toward the end of lug or stop 13 which is situated inwardly with respect to the circumference of the disk 8 and directly in line with a'circular series of slots, 15, out round the edge of the disk 8 and forming crossbars, 16, the slots being of sutlicient width to receive the end of the pin 13, so that when the disk 8 is moved towards the pin 13 the latter Will engage in the slots, 15, and prevent further rotation of the disk 8 as soon as one of the crossbars, 16, encounters said stop 13. 'lhese slots and crossbars, 16, are so situated and proportioned that the disk 8 may be given a tenth f of a rotation by the tooth 12, and at the completion of that tenth the crossbar, 16,

will be about to engage with the stop 13 se that when the tooth 12 lets go the stop 13 will control and prevent further rotation of the carrier. 'lhe lateral movement for thus bringing the carrier disk 8 into engagement with the stop 1 3 is preferably produced by an incline, 17, formed on the back plate, 4, in the line of movement of the tooth 12 and which causes the tooth 12 and its indicator disk 1, 2 or 3 to lift or move laterally with relation to the back plate, andthe tooth 12 'being under the edge of disk 8 at that. time it also lifts the disk 8,' As soon as the tooth v12 passes the incline, 17, thereby permitting disk 8 to drop back into lace, another tooth, 10, on the disk 8 1falls Just at the end of a stop 18 formed on the back plate in the line of movement of the tooth 10, said stop, 18, being heveled on one side to facilitate the passage of the tooth, 10,v thereover. 'Ihis prevents any retrograde movement of the disk 8.after it is released by the tooth 12,v

while the sto 13 prevents it from rotating forwardly un er the impulse it receives from the tooth 12.

A Having thus described mv invention, what I lclaim as new therein and desire to secure by Letters Patent, is: I 1.1 In a calculating machine the combination of a plurality of rotary indicators, a carrier independent of and disposed between the indicators, said carrier being adapted to en-v gage' one of the indicators for imparting the movement of anothei ol?l said indicators to the iirst indicator, means on said other indi.-

vca'tor lfor engaging the carrier whereby the lsaid movement of the last said indicator is imparted to the carrier, stop means for resisting movement of the carrier.

2. In a calculating machine the combination of a plurality of rotary indicators, a carrier for imparting the movement of one of said indicatorsl to the other, a stop normally out of the plane of movement of the carrier, and means for moving the carrier into the plane of the stop as the carrier rotates.

3. In a calculating machine the combination of a pl'urality of rotary indicators, a carrier for imparting movement of one of said indicators to the other, said carrier being free to rotate in one plane, means for forcing the carrier into another plane as it rotates and means for preventing its rotation in said other lane.

4. n a' calculating machine the combination of a plurality of rotary indicators, a carrier for imparting the movement of one of said` indicators to the other free to rotate in one plane in one direction but not .reversely, means for forcing 'the carrier into another plane as it rotates, and means'for preventing 1ts rotation in said other plane.

5. In a calculating machine the combination of a plurality of rotar-y indicator disks, a rotary carrier disposed between the disks for transmitting the motion of one of said disks to the other, a stop for limiting the rotation ofthe carrier, means on one of said indicators for directly engaging and rotating said carrier into engagement with the stop, and means on another of said indicators engaged by the carrier for receiving the rotation of carrier.

6. In a calculatin machine the combination of aplurality o? rotary indicators movable laterally or axially, teeth projecting from sa'id indicator, inclines with which said teeth engage for moving the indicators laterally, rotary carriers for imparting' the movement of one of said indicators to the other, and. under which said teeth enga e, said carriers being axially movable, cross ars on said carriers, sto s arranged in the line of movement of said crossbars but normally out of the plane thereof and adapted to be engaged by said crossbars when the carriers are moved axially towards them v 7. In a calculating machine the combination of a plurality of rotary indicators, a carrier'consisting of a rotary disk for imparting the movement of one of said indicators to the xother, teeth projecting laterally from the soy be engaged thereby when said disk moves means serving to prevent aretrograde movelaterally. ment of th'e carrier in the lst said planev of plane of movementl thereof but adapted to i plane of the stop as the carrier rotates, said 10 l 8. In a calculating machine, the combinaits movement.

7 tion Of a' Of rotary indicators, a C811'- rier for imparting the movement of one of said indicators to the other, a stop normally Witnesses; y

out of the plane of movement of the carrier, FRANCIS A. HOPKINS, and means for moving the carrier into the A. M. UHER. 

